Mobile Mummy 800 / 30 Degree

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The Mobile Mummy moves when you do, so that you can sleep on your side, stomach or back without feeling constrained. You can wear it like a garment to sit up and use your hands, or stow the foot box for a walk around camp.


Shell Material:
20D Nylon Ripstop
Liner Material:
20D Nylon Taffetta
800 Fill Duck DriDown

Tech Specs

EN Comfort Limit:
39oF / 4oC
EN Lower Limit:
29oF / -2oC
Fits To:
Men's Regular: 6 ft / 182 cm
Men's Long: 6 ft 6 in. / 198 cm
Fill Weight:
Men's Regular: 10.21 oz. / 0.29 kg
Men's Long: 11.41 oz. / 0.32 kg
Trail Weight:
Men's Regular: 1 lbs 11 oz. / 0.77 kg
Men's Long: 1 lbs 14 oz. / 0.85 kg
Men's Regular: 80 in. / 203 cm
Men's Long: 84 in. / 213 cm
Men's Regular: 64 in. / 163 cm
Men's Long: 68 in. / 173 cm
Men's Regular: 58 in. / 147 cm
Men's Long: 60 in. / 152 cm
Men's Regular: 40 in. / 102 cm
Men's Long: 42 in. / 107 cm
Zipper Side:
Stuff Sack Length:
Men's Regular: 14 in. / 36 cm
Men's Long: 14 in. / 36 cm
Stuff Sack Width:
Men's Regular: 7 in. / 18 cm
Men's Long: 7 in. / 18 cm
This item may be patented
Backcountry Edge:
Season: 2 Season
Gender: Male
Insulation: DriDown
    • Sierra Designs - Mobile Mummy
    • Sierra Designs - The Differences in Sierra Designs Sleeping Bags

    Product Reviews


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    1. Outstanding sleeping bag!!!

      I bought this sleeping bag last spring at REI. Took it on several trips to the Sierra this summer and I love it. It's great to sleep in for a restless side sleeper, very light, and compresses small. I took this to take instead of my old 5 degree bag, but I was a little concerned about how warm it would be. On my trips this summer, I was very warm just wearing a base layer and a beanie. I wasn't able to find the lower limit of what would work, so I decided to take it with me when we went to Tahoe this winter. Took it outside around 5 in the morning. My digital cooking thermometer, stopped working at 25 degrees. The weather station a few blocks away from where we were staying said it got to 12 that night and another said it was 18. Whatever the temperature actually was, I was still fine with just a base layer. Amazing. I was going to pick up the 3 season at the REI sale this spring, but unfortunately, REI aren't carrying it any more and the member sales REI are pretty hard to beat. on Apr 25th 2016

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